Requirement for sporting types in GPs' workplace (8)
I believe the answer is:
practice
I believe this clue is a double definition.
'requirement for sporting types' is the first definition.
(sports stars practise their sports)
'gps' workplace' is the second definition.
(medical practice)
'in' is the link.
(Other definitions for practice that I've seen before include "Doctor's business" , "training" , "Routine" , "Rehearsal" , "''. . . . . . . . maked perfect''" .)